Sanyo DP50747 red speckles/shuts off

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  • jason424
    Senior Member
    • Dec 2015
    • 187
    • United States

    #1

    Sanyo DP50747 red speckles/shuts off

    This TV turns on and works, but it would shut down quickly and there is red speckles all over (sometimes they go away after a while) and the blues look posterizing.
    I've checked the Va/Vs (s/b 61/198)and while they were both really low (52/178) I adjusted them up and while adjusting it would exhibit the shut down behavior. I assume that it's some sort of protection circuit being tripped?
    I've replaced a couple of the visibly blown capacitors and after a while it will shut off (1 1/2 hours) and it won't turn back on. But if I unplug it and plug it back in, it will come back on.

    I see there are other original capacitors (Samwha)and not sure if I should replace those to in hopes that will resolve the shut down issue?
    I thought I read there is a Yrr/Yfr adjustment for the red speckles? Where is this adjustment located?
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    Last edited by jason424; 03-14-2017, 10:28 AM. Reason: fixed Yrr/Yfr adjustment notation

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